PORTSMOUTH, Va. (Aug 20, 2021) Sailors assigned to the crash and salvage team aboard the aircraft carrier USS George H. W. Bush (CVN 77) simulate a personnel casualty evacuation drill. George H. W. Bush is nearing completion of a Docking Planned Incremental Availability at Norfolk Naval Shipyard. (U.S. Navy photo by Mass Communication Specialist 3rd Class Ryan Pitt)